One of the tasks of the Institute of Seismology is to publish bulletins on seismic events in Finland and the analysis of these events. The institute publishes three types of seismic bulletins: automatic and analyst-reviewed bulletins and different types of earthquake lists. You may use the earthquake search tool to search seismic events in the Earthquake Catalog of Northern Europe (FENCAT).
The lithosphere, i.e., the crust and the upper parts of the mantle beneath, can be effectively studied using seismic waves that propagate through the subsurface and reflect and refract from the interfaces (or internal boundaries) within the subsurface.
These seismic soundings use for example explosions and vibrators trucks as sources. The seismic waves traveling through the subsurface are recorded on the surface using geophones (on land) or hydrophones (on water).
The structure of the lithosphere can also be studied using seismic tomography which uses seismic signals from mining and road construction explosions or even earthquakes to "x-ray" the earth's crust and mantle. Field work is usually done in international collaboration since it requires large resources (staff, hardware, diverse know-how).
The Finnish Reflection Experiment (FIRE) dataset consists of seismic reflection data from 2,104 km. The project took place between 2001 and 2005. It was conducted in co-operation between the Geological Survey of Finland (GTK), the Institute of Seismology at the University of Helsinki and the Institute of Geosciences and the Sodankylä Geophysical Observatory of the University of Oulu. The seismic contractor in the FIRE project was Specgeofizika S.E. together with Machinoexport S.E.
The FIRE data are hosted at CSC - IT Center for Science Ltd. Links to datasets can be found at the FIRE webpages (link below).
Moho (Mohorovičić discontinuity) is the boundary between the Earth's crust and the mantle.